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LM4041-N
,
LM4041-N-Q1
SNOS641G –OCTOBER 1999–REVISED JANUARY 2016
LM4041-N-xx Precision Micropower Shunt Voltage Reference
1 Features 3 Description
Ideal for space-critical applications, the LM4041-N
1• Qualified for Automotive Applications precision voltage reference is available in the sub-
• SEC-Q100 Qualified With the Following Results: miniature SC70 and SOT-23 surface-mount
– Device Temperature Grade 1: –40°C to packages. The advanced design of the LM4041-N
+125°C Ambient Temperature Range eliminates the need for an external stabilizing
capacitor while ensuring stability with any capacitive
– Device Temperature Grade 3: –40°C to +85°C load, thus making the LM4041-N easy to use. Further
Ambient Temperature Range (For SOT-23 reducing design effort is the availability of a fixed
Only) (1.225 V) and adjustable reverse breakdown voltage.
• Available in Standard, AEC Q-100 Grade 1 The minimum operating current is 60 μA for the
(Extended Temperature Range), and Grade 3 LM4041-N 1.2 and the LM4041-N ADJ. Both versions
(Industrial Temperature Range) Qualified Versions have a maximum operating current of 12 mA.
(SOT-23 Only) The LM4041-N uses fuse and Zener-zap reverse
• Small Packages: SOT-23, TO-92, and SC70 breakdown or reference voltage trim during wafer sort
to ensure that the prime parts have an accuracy of
• No Output Capacitor Required better than ±0.1% (A grade) at 25°C. Bandgap
• Tolerates Capacitive Loads reference temperature drift curvature correction and
• Reverse Breakdown Voltage Options of 1.225 V low dynamic impedance ensure stable reverse
and Adjustable breakdown voltage accuracy over a wide range of
operating temperatures and currents.
• Output Voltage Tolerance (A grade, 25°C) =
±0.1%(Maximum) Device Information(1)
• Low Output Noise (10 Hz to 10kHz) = 20 μVrms PART NUMBER PACKAGE BODY SIZE (NOM)
• Wide Operating Current Range of 60 μA to 12 mA SC70 (5) 1.25 mm × 2.00 mm
• Industrial Temperature Range (LM4041A/B-N, LM4041-N SOT-23 (3) 1.30 mm × 2.92 mm
LM4041-N-Q1A/Q1B) of −40°C to +85°C TO-92 (3) 4.30 mm × 4.30 mm
• Extended Temperature Range (LM4041C/D/E-N, LM4041-N-Q1 SOT-23 (3) 1.30 mm × 2.92 mm
LM4041-N-Q1C/Q1D/Q1E) of −40°C to +125°C (1) For all available packages, see the orderable addendum at
• Low Temperature Coefficient of 100 ppm/°C the end of the data sheet.
(Maximum) Block Diagram
2 Applications
• Portable, Battery-Powered Equipment
• Data Acquisition Systems
• Instrumentation
• Process Control
• Energy Management
• Automotive
• Precision Audio Components
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
LM4041-N
,
LM4041-N-Q1
SNOS641G –OCTOBER 1999–REVISED JANUARY 2016
www.ti.com
Table of Contents
1 Features.................................................................. 17 Parameter Measurement Information ................ 17
2 Applications ........................................................... 18 Detailed Description............................................ 17
8.1 Overview................................................................. 17
3 Description............................................................. 18.2 Functional Block Diagram....................................... 17
4 Revision History..................................................... 28.3 Feature Description................................................. 17
5 Pin Configuration and Functions......................... 38.4 Device Functional Modes........................................ 18
6 Specifications......................................................... 49 Application and Implementation ........................ 19
6.1 Absolute Maximum Ratings ...................................... 49.1 Application Information............................................ 19
6.2 ESD Ratings.............................................................. 59.2 Typical Applications ................................................ 20
6.3 Recommended Operating Conditions....................... 510 Power Supply Recommendations ..................... 27
6.4 Thermal Information.................................................. 511 Layout................................................................... 27
6.5 LM4041-N-xx 1.2 Electrical Characteristics (Industrial
Temperature Range).................................................. 611.1 Layout Guidelines ................................................. 27
6.6 LM4041-N-xx 1.2 Electrical Characteristics (Industrial 11.2 Layout Example .................................................... 27
Temperature Range).................................................. 712 Device and Documentation Support................. 28
6.7 LM4041-N-xx 1.2 Electrical Characteristics (Extended 12.1 Related Links ........................................................ 28
Temperature Range).................................................. 912.2 Community Resources.......................................... 28
6.8 LM4041-N-xx ADJ (Adjustable) Electrical 12.3 Trademarks........................................................... 28
Characteristics (Industrial Temperature Range)...... 11 12.4 Electrostatic Discharge Caution............................ 28
6.9 LM4041-N-xx ADJ (Adjustable) Electrical 12.5 Glossary................................................................ 28
Characteristics (Extended Temperature Range) ..... 13
6.10 Typical Characteristics.......................................... 14 13 Mechanical, Packaging, and Orderable
Information........................................................... 28
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision F (July 2013) to Revision G Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes,Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
Changes from Revision D (April 2013) to Revision E Page
• Changed layout of National Data Sheet to TI format ........................................................................................................... 24
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1.2 V
1
2
–
+3*
1
2
3
N/C*
t
+
5
N/C
4
N/C
LM4041-N
,
LM4041-N-Q1
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SNOS641G –OCTOBER 1999–REVISED JANUARY 2016
5 Pin Configuration and Functions
DBZ Package DCK Package
3-Pin SOT-23 5-Pin SC70
Top View Top View
LP Package
3-Pin TO-92
Top View
Pin Functions
PIN I/O DESCRIPTION
NAME SOT-23 SC70 TO-92
Anode 2 1 1 O Anode pin, normally grounded
Cathode 1 3 2 I/O Shunt current and output voltage
FB — — — I Feedback pin for adjustable output voltage
NC** 3 2 — — **Must float or connect to anode
NC — 4, 5 3 — No connect
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1
2
3
t
+
5
FB
4
N/C
ADJ
N/C
ADJ
1
2
–
+
3
FB
LM4041-N
,
LM4041-N-Q1
SNOS641G –OCTOBER 1999–REVISED JANUARY 2016
www.ti.com
DBZ Package
3-Pin SOT-23 DCK Package
Top View 5-Pin SC70
Top View
LP Pakage
3-Pin TO-92
Bottom View
Pin Functions: ADJ Pinouts
PIN I/O DESCRIPTION
NAME SOT-23 SC70 TO-92
Anode 3 2 1 O Anode pin, normally grounded
Cathode 2 3 2 I/O Shunt current and output voltage
FB 1 5 3 I Feedback pin for adjustable output voltage
NC** — — — — **Must float or connect to anode
NC — 1, 4 — — No connect
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)(1)(2)
MIN MAX UNIT
Reverse current 20 mA
Forward current 10 mA
Maximum output voltage (LM4041-N ADJ, LM4041-N-Q1 ADJ) 15 V
DBZ package 306 mW
Power dissipation (TA= 25°C)(3) LP package 550 mW
DCK package 241 mW
Vapor phase (60 seconds) 215 °C
DBZ packages
Lead temperature Infrared (15 seconds) 220 °C
LP package Soldering (10 seconds) 260 °C
Storage temperature, Tstg –65 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.
(3) The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax (maximum junction temperature),
θJA (junction to ambient thermal resistance), and TA(ambient temperature). The maximum allowable power dissipation at any
temperature is PDmax = (TJmax −TA)/RθJA or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4041-N,
TJmax = 125°C, and the typical thermal resistance (RθJA), when board mounted, is 326°C/W for the SOT-23 package, 415°C/W for the
SC70 package and 180°C/W with 0.4-in lead length and 170°C/W with 0.125-in lead length for the TO-92 package.
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6.2 ESD Ratings VALUE UNIT
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)(2) ±2000
Electrostatic
V(ESD) Charged-device model (CDM), per JEDEC specification JESD22-C101(3) ±200 V
discharge Machine model (MM) ±200
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) The human-body model is a 100-pF capacitor discharged through a 1.5-kΩresistor into each pin. The machine model is a 200-pF
capacitor discharged directly into each pin. All pins are rated at 2 kV for human-body model, but the feedback pin which is rated at
1 kV.
(3) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Manufacturing with
less than 250-V CDM is possible with the necessary precautions.
6.3 Recommended Operating Conditions
See (1)
MIN NOM MAX UNIT
Temperature Tmin TATmax °C
Industrial temperature –40 TA85 °C
Extended temperature –40 TA125 °C
LM4041-N 1.2, LM4041-N-Q1 1.2 60 1200 μA
Reverse current LM4041-N ADJ, LM4041-N-Q1 ADJ 60 1200 μA
Output voltage LM4041-N ADJ, LM4041-N-Q1 ADJ 1.24 10 V
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Recommended Operating Conditions indicate
conditions for which the device is functional, but do not ensure specific performance limits. For ensured specifications and test
conditions, see the Electrical Characteristics. The ensured specifications apply only for the test conditions listed. Some performance
characteristics may degrade when the device is not operated under the listed test conditions.
6.4 Thermal Information LM4041-N,
LM4041-N LM4041-N-Q1
THERMAL METRIC(1) UNIT
SC70 TO-92 SOT-23
5 PINS 3 PINS 3 PINS
RθJA Junction-to-ambient thermal resistance 265.3 161.5 291.9 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 93.1 84.5 114.3 °C/W
RθJB Junction-to-board thermal resistance 46.7 — 62.3 °C/W
ψJT Junction-to-top characterization parameter 2.2 28.4 7.4 °C/W
ψJB Junction-to-board characterization parameter 45.9 140.6 61 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance — — — °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report, SPRA953.
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6.5 LM4041-N-xx 1.2 Electrical Characteristics (Industrial Temperature Range)
All limits TA= TJ= 25°C for the LM4041xAIM3, LM4041xBIM3, LM4041AIZ, LM4041BIZ and LM4041BIM7 devices, unless
otherwise specified. The grades A and B designate initial reverse breakdown voltage tolerances of ±0.1% and ±0.2%,
respectively.
PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT
Reverse breakdown IR= 100 μA 1.225 V
voltage
LM4041AIM3, LM4041QAIM3 ±1.2
LM4041AIM3, LM4041AIZ
IR= 100 μALM4041BIM3, LM4041QBIM3
VR±2.4
LM4041BIZ, LM4041BIM7
Reverse breakdown mV
voltage tolerance(3) LM4041AIM3, LM4041QAIM3 ±9.2
LM4041AIM3, LM4041AIZ
TA= TJ= TMIN to TMAX LM4041BIM3, LM4041QBIM3 ±10.4
LM4041BIZ, LM4041BIM7
TA= TJ= 25°C 45 60
Minimum operating
IRMIN μA
current TA= TJ= TMIN to TMAX 65
IR= 10 mA ±20
Average reverse TA= TJ= 25°C ±15
breakdown
ΔVR/ΔT IR= 1 mA ppm/°C
voltage temperature TA= TJ= TMIN to TMAX ±100
Coefficient(3) IR= 100 μA ±15
TA= TJ= 25°C 0.7 1.5
IRMIN ≤IR≤1 mA
Reverse breakdown TA= TJ= TMIN to TMAX 2
voltage change with
ΔVR/ΔIRmV
operating TA= TJ= 25°C 4 6
current change(4) 1 mA ≤IR≤12 mA TA= TJ= TMIN to TMAX 8
Reverse dynamic IR= 1 mA, f = 120 Hz,
ZR0.5 1.5 Ω
impedance IAC= 0.1 IR
IR= 100 μA
eNWideband noise 20 μVrms
10 Hz ≤f≤10 kHz
Reverse breakdown t = 1000 hrs
ΔVRvoltage long-term T = 25°C ±0.1°C 120 ppm
stability IR= 100 μA
VHYST Thermal hysteresis(5) ΔT = −40°C to +125°C 0.08%
(1) Limits are 100% production tested at 25°C. Limits over temperature are ensured through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate AOQL.
(2) Typicals are at TJ= 25°C and represent most likely parametric norm.
(3) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage
Tolerance ±[(ΔVR↱ΔT)(max ΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in
temperature from the reference point of 25 °C to T MAX or TMIN, and VRis the reverse breakdown voltage. The total over-temperature
tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
E-grade: ±2.98% = ±2.0% ±150 ppm/°C × 65°C
The total over-temperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown
below:
B-grade: ±1.2% = ±0.2% ±100 ppm/°C × 100°C
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
E-grade: ±4.5% = ±2.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade LM4041-N 1.2 has an over-temperature Reverse Breakdown Voltage tolerance of ±1.2 V ×
0.75% = ±9.2 mV.
(4) Load regulation is measured on pulse basis from no load to the specified load current. Output changes due to die temperature change
must be taken into account separately.
(5) Thermal hysteresis is defined as the difference in voltage measured at +25°C after cycling to temperature –40°C and the +25°C
measurement after cycling to temperature +125°C.
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6.6 LM4041-N-xx 1.2 Electrical Characteristics (Industrial Temperature Range)
All limits TA= TJ= 25°C. unless otherwise specified. The grades C, D, and E designate initial reverse breakdown voltage
tolerances of ±0.5%, ±1.0%, and ±2.0%, respectively.
PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT
Reverse
Breakdown IR= 100 μA 1.225 V
Voltage
LM4041CIM3, LM4041QCIM3, ±6
LM4041CIZ, LM4041CIM7
LM4041DIM3, LM4041QDIM3,
TA= TJ= 25°C ±12
LM4041DIZ, LM4041DIM7
VRLM4041EIM3, LM4041QEIM3,
Reverse ±25
LM4041EIZ, LM4041EIM7
breakdown IR= 100 μA mV
voltage LM4041CIM3, LM4041QCIM3, ±14
tolerance(3) LM4041CIZ, LM4041CIM7
LM4041DIM3, LM4041QDIM3,
TA= TJ= TMIN to TMAX ±24
LM4041DIZ, LM4041DIM7
LM4041EIM3, LM4041QEIM3, ±36
LM4041EIZ, LM4041EIM7
LM4041CIM3, LM4041QCIM3, 45 60
LM4041CIZ, LM4041CIM7
LM4041DIM3, LM4041QDIM3,
TA= TJ= 25°C LM4041DIZ, LM4041DIM7 65
LM4041EIM3, LM4041QEIM3,
LM4041EIZ, LM4041EIM7
Minimum
IRMIN μA
operating current LM4041CIM3, LM4041QCIM3, 65
LM4041CIZ, LM4041CIM7
LM4041DIM3, LM4041QDIM3,
TA= TJ= TMIN to TMAX LM4041DIZ, LM4041DIM7 70
LM4041EIM3, LM4041QEIM3,
LM4041EIZ, LM4041EIM7
IR= 10 mA ±20
TA= TJ= 25°C ±15
LM4041CIM3, LM4041QCIM3, ±100
LM4041CIZ, LM4041CIM7
VRTemperature
ΔVR/ΔT IR= 1 mA ppm/°C
coefficient(3) LM4041DIM3, LM4041QDIM3,
TA= TJ= TMIN to TMAX LM4041DIZ, LM4041DIM7 ±150
LM4041EIM3, LM4041QEIM3,
LM4041EIZ, LM4041EIM7
IR= 100 μA ±15
(1) Limits are 100% production tested at 25°C. Limits over temperature are ensured through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate AOQL.
(2) Typicals are at TJ= 25°C and represent most likely parametric norm.
(3) The overtemperature limit for reverse breakdown voltage tolerance is defined as the room temperature reverse breakdown voltage
tolerance ±[(ΔVR↱ΔT)(max ΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in
temperature from the reference point of 25 °C to T MAX or TMIN, and VRis the reverse breakdown voltage. The total over-temperature
tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
E-grade: ±2.98% = ±2.0% ±150 ppm/°C × 65°C
The total over-temperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown
below:
B-grade: ±1.2% = ±0.2% ±100 ppm/°C × 100°C
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
E-grade: ±4.5% = ±2.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade LM4041-N 1.2 has an over-temperature reverse breakdown voltage tolerance of ±1.2 V × 0.75%
= ±9.2 mV.
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LM4041-N-xx 1.2 Electrical Characteristics (Industrial Temperature Range) (continued)
All limits TA= TJ= 25°C. unless otherwise specified. The grades C, D, and E designate initial reverse breakdown voltage
tolerances of ±0.5%, ±1.0%, and ±2.0%, respectively.
PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT
LM4041CIM3, LM4041QCIM3, 0.7 1.5
LM4041CIZ, LM4041CIM7
LM4041DIM3, LM4041QDIM3,
TA= TJ= 25°C LM4041DIZ, LM4041DIM7 2
(LM4041EIM3, LM4041QEIM3,
LM4041EIZ, LM4041EIM7
IRMIN ≤IR≤1 mA mV
LM4041CIM3, LM4041QCIM3, 2
LM4041CIZ, LM4041CIM7
LM4041DIM3, LM4041QDIM3,
TA= TJ= TMIN to TMAX LM4041DIZ, LM4041DIM7 2.5
Reverse LM4041EIM3, LM4041QEIM3,
breakdown LM4041EIZ, LM4041EIM7)
ΔVR/ΔIRvoltage change LM4041CIM3, LM4041QCIM3,
with operating 2.5 6
LM4041CIZ, LM4041CIM7
current change(4)
LM4041DIM3, LM4041QDIM3,
TA= TJ= 25°C LM4041DIZ, LM4041DIM7 8
LM4041EIM3, LM4041QEIM3,
LM4041EIZ, LM4041EIM7
1 mA ≤IR≤12 mA mV
LM4041CIM3, LM4041QCIM3, 8
LM4041CIZ, LM4041CIM7
LM4041DIM3, LM4041QDIM3,
TA= TJ= TMIN to TMAX LM4041DIZ, LM4041DIM7 10
LM4041EIM3, LM4041QEIM3,
LM4041EIZ, LM4041EIM7
LM4041CIM3, LM4041QCIM3, 0.5 1.5
LM4041CIZ, LM4041CIM7
Reverse dynamic IR= 1 mA, f = 120 Hz LM4041DIM3, LM4041QDIM3,
ZRΩ
impedance IAC = 0.1 IRLM4041DIZ, LM4041DIM7 2
LM4041EIM3, LM4041QEIM3,
LM4041EIZ, LM4041EIM7
IR= 100 μA
eNWideband noise 20 μVrms
10 Hz ≤f≤10 kHz
Reverse t = 1000 hrs
breakdown
ΔVRT = 25°C ±0.1°C 120 ppm
voltage long-term IR= 100 μA
stability
Thermal
VHYST ΔT = −40°C to +125°C 0.08%
hysteresis(5)
(4) Load regulation is measured on pulse basis from no load to the specified load current. Ouput changes due to die temperature change
must be taken into account separately.
(5) Thermal hysteresis is defined as the difference in voltage measured at +25°C after cycling to temperature –40°C and the +25°C
measurement after cycling to temperature +125°C.
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6.7 LM4041-N-xx 1.2 Electrical Characteristics (Extended Temperature Range)
All limits TA= TJ= 25°C, unless otherwise specified. The grades C, D, and E designate initial reverse breakdown voltage
tolerance of ±0.5%, ±1.0%, and ±2.0% respectively.
PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT
Reverse
breakdown IR= 100 μA 1.225 V
voltage
LM4041CEM3, ±6
LM4041QCEM3
LM4041DEM3,
TA= TJ= 25°C ±12
LM4041QDEM3
VRLM4041EEM3,
Reverse ±25
LM4041QEEM3
breakdown IR= 100 μA mV
voltage LM4041CEM3, ±18.4
error(3) LM4041QCEM3
LM4041DEM3,
TA= TJ= TMIN to TMAX ±31
LM4041QDEM3
LM4041EEM3, ±43
LM4041QEEM3
LM4041CEM3, 45 60
LM4041QCEM3
LM4041DEM3,
TA= TJ= 25°C LM4041QDEM3 65
LM4041EEM3,
Minimum LM4041QEEM3
IRMIN operating μA
LM4041CEM3,
current 68
LM4041QCEM3
LM4041EEM3, LM4041DEM3,
LM4041QEEM3 LM4041QDEM3 73
LM4041EEM3,
LM4041QEEM3
LM4041EEM3, ±20
LM4041QEEM3
TA= TJ= 25°C ±15
LM4041CEM3, ±100
VR LM4041QCEM3
ΔVR/ΔT temperature IR= 1 mA ppm/°C
LM4041DEM3,
TA= TJ= TMIN to TMAX
coefficient(3) LM4041QDEM3 ±150
LM4041EEM3,
LM4041QEEM3
LM4041EEM3, ±15
LM4041QEEM3
(1) Limits are 100% production tested at 25°C. Limits over temperature are ensured through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate AOQL.
(2) Typicals are at TJ= 25°C and represent most likely parametric norm.
(3) The overtemperature limit for reverse breakdown voltage tolerance is defined as the room temperature reverse breakdown voltage
tolerance ±[(ΔVR↱ΔT)(max ΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in
temperature from the reference point of 25 °C to T MAX or TMIN, and VRis the reverse breakdown voltage. The total over-temperature
tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below:
A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
E-grade: ±2.98% = ±2.0% ±150 ppm/°C × 65°C
The total over-temperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown
below:
B-grade: ±1.2% = ±0.2% ±100 ppm/°C × 100°C
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
E-grade: ±4.5% = ±2.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade LM4041-N 1.2 has an over-temperature reverse breakdown voltage tolerance of ±1.2 V × 0.75%
= ±9.2 mV.
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LM4041-N-xx 1.2 Electrical Characteristics (Extended Temperature Range) (continued)
All limits TA= TJ= 25°C, unless otherwise specified. The grades C, D, and E designate initial reverse breakdown voltage
tolerance of ±0.5%, ±1.0%, and ±2.0% respectively.
PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT
LM4041CEM3, 0.7 1.5
LM4041QCEM3
LM4041DEM3,
TA= TJ= 25°C LM4041QDEM3 2
LM4041EEM3,
LM4041QEEM3
IRMIN ≤IR≤1.0 mA mV
LM4041CEM3, 2
LM4041QCEM3
LM4041EEM3, LM4041DEM3,
LM4041QEEM3 LM4041QDEM3 2.5
M4041EEM3,
Reverse LM4041QEEM3
breakdown
ΔVR/ΔIRchange with LM4041CEM3, 2.5 6
current(4) LM4041QCEM3
LM4041EEM3, LM4041DEM3,
LM4041QEEM3 LM4041QDEM3 8
LM4041EEM3,
LM4041QEEM3
1 mA ≤IR≤12 mA mV
LM4041CEM3, 8
LM4041QCEM3
LM4041EEM3, LM4041DEM3,
LM4041QEEM3 LM4041QDEM3 10
LM4041EEM3,
LM4041QEEM3
TA= TJ= 25°C 0.5
LM4041CEM3, 1.5
Reverse LM4041QCEM3
IR= 1 mA, f = 120 Hz,
ZRdynamic Ω
IAC= 0.1 IRLM4041DEM3,
TA= TJ= TMIN to TMAX
impedance LM4041QDEM3 2
LM4041EEM3,
LM4041QEEM3
IR= 100 μA
eNNoise voltage 20 μVrms
10 Hz ≤f≤10 kHz
Long-term t = 1000 hrs
stability
ΔVRT = 25°C ±0.1°C 120 ppm
(non- IR= 100 μA
cumulative)
Thermal
VHYST ΔT = −40°C to +125°C 0.08%
hysteresis(5)
(4) Load regulation is measured on pulse basis from no load to the specified load current. Ouput changes due to die temperature change
must be taken into account separately.
(5) Thermal hysteresis is defined as the difference in voltage measured at +25°C after cycling to temperature –40°C and the +25°C
measurement after cycling to temperature +125°C.
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6.8 LM4041-N-xx ADJ (Adjustable) Electrical Characteristics (Industrial Temperature Range)
All limits TJ= 25°C, unless otherwise specified (SOT-23, see(1)),
IRMIN ≤IR≤12 mA, VREF ≤VOUT ≤10 V. The grades C and D designate initial Reference Voltage Tolerances of ±0.5% and
±1%, respectively for VOUT = 5 V.
PARAMETER TEST CONDITIONS MIN(2) TYP(3) MAX(2) UNIT
Reference IR= 100 μA, VOUT = 5 V 1.233 V
voltage
LM4041CIM3, LM4041QCIM3, ±6.2
LM4041CIZ, LM4041CIM7
TJ= 25°C LM4041DIM3, LM4041QDIM3,
VREF ±12
Reference LM4041DIZ, LM4041DIM7
voltage IR= 100 μA, VOUT = 5 V mV
LM4041CIM3, LM4041QCIM3,
tolerance(4) ±14
LM4041CIZ, LM4041CIM7
TA= TJ= TMIN to TMAX LM4041DIM3, LM4041QDIM3, ±24
LM4041DIZ, LM4041DIM7
LM4041CIM3, LM4041QCIM3, 45 60
LM4041CIZ, LM4041CIM7
TJ= 25°C LM4041DIM3, LM4041QDIM3, 65
Minimum LM4041DIZ, LM4041DIM7
IRMIN operating μA
LM4041CIM3, LM4041QCIM3,
current 65
LM4041CIZ, LM4041CIM7
TA= TJ= TMIN to TMAX LM4041DIM3, LM4041QDIM3, 70
LM4041DIZ, LM4041DIM7
LM4041CIM3, LM4041QCIM3, 0.7 1.5
LM4041CIZ, LM4041CIM7
TJ= 25°C LM4041DIM3, LM4041QDIM3, 2
LM4041DIZ, LM4041DIM7
IRMIN ≤IR≤1 mA mV
SOT-23: VOUT ≥1.6 V(1) LM4041CIM3, LM4041QCIM3, 2
LM4041CIZ, LM4041CIM7
TA= TJ= TMIN to TMAX
Reference LM4041DIM3, LM4041QDIM3,
voltage 2.5
LM4041DIZ, LM4041DIM7
change with
ΔVREF/ΔIRoperating LM4041CIM3, LM4041QCIM3, 2 4
current LM4041CIZ, LM4041CIM7
change(5) TJ= 25°C LM4041DIM3, LM4041QDIM3, 6
LM4041DIZ, LM4041DIM7
1 mA ≤IR≤12 mA mV
SOT-23: VOUT ≥1.6 V(1) LM4041CIM3, LM4041QCIM3, 6
LM4041CIZ, LM4041CIM7
TA= TJ= TMIN to TMAX LM4041DIM3, LM4041QDIM3, 8
LM4041DIZ, LM4041DIM7
LM4041CIM3, LM4041QCIM3, –1.55 –2
LM4041CIZ, LM4041CIM7
TJ= 25°C
Reference LM4041DIM3, LM4041QDIM3,
voltage –2.5
LM4041DIZ, LM4041DIM7
change with
ΔVREF/ΔVOIR= 1 mA mV/V
output LM4041CIM3, LM4041QCIM3, –2.5
voltage LM4041CIZ, LM4041CIM7
change TA= TJ= TMIN to TMAX LM4041DIM3, LM4041QDIM3, –3
LM4041DIZ, LM4041DIM7
LM4041CIM3, LM4041QCIM3, 60 100
LM4041CIZ, LM4041CIM7
TJ= 25°C
Feedback
IFB LM4041DIM3, LM4041QDIM3, nA
current 150
LM4041DIZ, LM4041DIM7
TA= TJ= TMIN to TMAX 120
(1) When VOUT ≤1.6 V, the LM4041-N ADJ in the SOT-23 package must operate at reduced IR. This is caused by the series resistance of
the die attach between the die (–) output and the package (–) output pin. See the Output Saturation (SOT-23 only) curve in the Typical
Characteristics section.
(2) Limits are 100% production tested at 25°C. Limits over temperature are ensured through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate AOQL.
(3) Typicals are at TJ= 25°C and represent most likely parametric norm.
(4) Reference voltage and temperature coefficient will change with output voltage. See Typical Characteristics curves.
(5) Load regulation is measured on pulse basis from no load to the specified load current. Ouput changes due to die temperature change
must be taken into account separately.
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,
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LM4041-N-xx ADJ (Adjustable) Electrical Characteristics (Industrial Temperature
Range) (continued)
All limits TJ= 25°C, unless otherwise specified (SOT-23, see(1)),
IRMIN ≤IR≤12 mA, VREF ≤VOUT ≤10 V. The grades C and D designate initial Reference Voltage Tolerances of ±0.5% and
±1%, respectively for VOUT = 5 V.
PARAMETER TEST CONDITIONS MIN(2) TYP(3) MAX(2) UNIT
IR= 10 mA 20
TJ= 25°C 15
LM4041CIM3,
Average LM4041QCIM3, ±100
reference LM4041CIZ,
TA= TJ=
ΔVREF/ΔT voltage VOUT = 5 V IR= 1 mA LM4041CIM7 ppm/°C
TMIN to
temperature LM4041DIM3,
TMAX
coefficient(4) LM4041QDIM3, ±150
LM4041DIZ,
LM4041DIM7
IR= 100 μA 15
Dynamic IR= 1 mA, f = 120 Hz, IAC = 0.1 IR0.3
ZOUT output Ω
VOUT = VREF VOUT = 10 V 2
impedance
Wideband
eNVOUT = VREF IR= 100 μA 10 Hz ≤f≤10 kHz 20 μVrms
noise
Reference
voltage t = 1000 hrs, IR= 100 μA,
ΔVREF 120 ppm
long-term T = 25°C ±0.1°C
stability
Thermal
VHYST ΔT = −40°C to +125°C 0.08%
hysteresis(6)
(6) Thermal hysteresis is defined as the difference in voltage measured at +25°C after cycling to temperature –40°C and the +25°C
measurement after cycling to temperature +125°C.
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6.9 LM4041-N-xx ADJ (Adjustable) Electrical Characteristics (Extended Temperature Range)
All limits TJ= 25°C, unless otherwise specified (SOT-23, see(1)), IRMIN ≤IR≤12 mA, VREF ≤VOUT ≤10 V. The grades C and D
designate initial Reference Voltage Tolerances of ±0.5% and ±1%, respectively for VOUT = 5 V.
PARAMETER TEST CONDITIONS MIN(2) TYP(3) MAX(2) UNIT
Reference voltage IR= 100 μA, VOUT = 5 V 1.233 V
LM4041CEM3, LM4041QCEM3 ±6.2
TJ= 25°C
VREF LM4041DEM3, LM4041QDEM3 ±12
Reference voltage IR= 100 μA, VOUT =mV
tolerance(4) 5 V LM4041CEM3, LM4041QCEM3 ±18
TA= TJ= TMIN to TMAX LM4041DEM3, LM4041QDEM3 ±30
LM4041CEM3, LM4041QCEM3 45 60
TJ= 25°C LM4041DEM3, LM4041QDEM3 65
Minimum
IRMIN μA
operating current LM4041CEM3, LM4041QCEM3 68
TA= TJ= TMIN to TMAX LM4041DEM3, LM4041QDEM3 73
LM4041CEM3, LM4041QCEM3 0.7 1.5
TJ= 25°C
IRMIN ≤IR≤1 mA LM4041DEM3, LM4041QDEM3 2
SOT-23: VOUT ≥1.6 mV
LM4041CEM3, LM4041QCEM3 2
V(1) TA= TJ= TMIN to TMAX
Reference voltage LM4041DEM3, LM4041QDEM3 2.5
change with
ΔVREF/ΔIRoperating LM4041CEM3, LM4041QCEM3 2 8
current change(5) TJ= 25°C
1 mA ≤IR≤12 mA LM4041DEM3, LM4041QDEM3 10
SOT-23: VOUT ≥1.6 mV
LM4041CEM3, LM4041QCEM3 6
V(1) TA= TJ= TMIN to TMAX LM4041DEM3, LM4041QDEM3 8
LM4041CEM3, LM4041QCEM3 –1.55 –2
TJ= 25°C
Reference voltage LM4041DEM3, LM4041QDEM3 –2.5
change with
ΔVREF/ΔVOIR= 1 mA mV/V
output voltage LM4041CEM3, LM4041QCEM3 –3
change TA= TJ= TMIN to TMAX LM4041DEM3, LM4041QDEM3 –4
LM4041CEM3, LM4041QCEM3 60 100
TJ= 25°C LM4041DEM3, LM4041QDEM3 150
IFB Feedback current nA
LM4041CEM3, LM4041QCEM3 120
TA= TJ= TMIN to TMAX LM4041DEM3, LM4041QDEM3 200
IR= 10 mA 20
TJ= 25°C 15
Average
reference LM4041CEM3, ±100
ΔVREF/ΔT voltage VOUT = 5 V, IR= 1 mA LM4041QCEM3 ppm/°C
TA= TJ= TMIN to TMAX
temperature LM4041DEM3,
coefficient(4) ±150
LM4041QDEM3
IR= 100 μA 15
IR= 1 mA, f = 120 Hz,
IAC = 0.1 IR0.3
Dynamic output
ZOUT Ω
impedance VOUT = VREF
VOUT = 10 V 2
IR= 100 μA, VOUT = VREF
eNWideband noise 20 μVrms
10 Hz ≤f≤10 kHz
Reference voltage t = 1000 hrs, IR= 100 μA,
ΔVREF 120 ppm
long-term stability T = 25°C ±0.1°C
Thermal
VHYST ΔT = −40°C to +125°C 0.08%
hysteresis(6)
(1) When VOUT ≤1.6 V, the LM4041-N ADJ in the SOT-23 package must operate at reduced IR. This is caused by the series resistance of
the die attach between the die (–) output and the package (–) output pin. See the Output Saturation (SOT-23 only) curve in the Typical
Characteristics section.
(2) Limits are 100% production tested at 25°C. Limits over temperature are ensured through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate AOQL.
(3) Typicals are at TJ= 25°C and represent most likely parametric norm.
(4) Reference voltage and temperature coefficient will change with output voltage. See Typical Characteristics curves.
(5) Load regulation is measured on pulse basis from no load to the specified load current. Ouput changes due to die temperature change
must be taken into account separately.
(6) Thermal hysteresis is defined as the difference in voltage measured at +25°C after cycling to temperature –40°C and the +25°C
measurement after cycling to temperature +125°C.
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6.10 Typical Characteristics
Figure 2. Output Impedance vs Frequency
Figure 1. Temperature Drift for Different
Average Temperature Coefficient
Figure 3. Noise Voltage Figure 4. Reverse Characteristics
and Minimum Operating Current
Figure 5. Start-Up Characteristics Figure 6. Reference Voltage
vs Output Voltage and Temperature
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Typical Characteristics (continued)
Figure 7. Reference Voltage Figure 8. Feedback Current
vs Temperature and Output Voltage vs Output Voltage and Temperature
Figure 10. Output Impedance vs Frequency
Figure 9. Output Saturation (SOT-23 Only)
Figure 11. Output Impedance vs Frequency Figure 12. Reverse Characteristics
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7 Parameter Measurement Information
Figure 14. Adjustable Output Test Circuit Figure 15. Line Transient Test Circuit
Figure 16. Start-Up and Shutdown Test Circuit
8 Detailed Description
8.1 Overview
The LM4041 is a precision micro-power shunt voltage reference available in both a fixed and output voltage and
adjustable output voltage options. The part has three different packages available to meet small footprint
requirements. It is also available in five different tolerance grades.
8.2 Functional Block Diagram
*LM4041-N ADJ only
**LM4041-N 1.2 only
8.3 Feature Description
The LM4041 is effectively a precision Zener diode. The part requires a small quiescent current for regulation, and
regulates the output voltage by shunting more or less current to ground, depending on input voltage and load.
The only external component requirement is a resistor between the cathode and the input voltage to set the input
current. An external capacitor can be used on the input or output, but is not required.
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8.4 Device Functional Modes
The LM4041 has fixed output voltage options as well as adjustable output voltage options. The fixed output parts
can only be used in closed-loop operation, as the feedback is internal. The adjustable option parts are most
commonly operated in closed-loop mode, where the feedback node is tied to the output voltage through a
resistor divider. The output voltage will remain as long as lRis between lRMIN and lRMAX; see LM4041-N-xx 1.2
Electrical Characteristics (Industrial Temperature Range). This part can also be used in open-loop mode to act
as a comparator, driving the feedback node from another voltage source.
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